Recreational air mattress



FIG. 1 is a perspective view of a recreational air mattress design;

FIG. 2 is a top plan view thereof, with the bottom plan view being a mirror image thereof;

FIG. 3 is a left side elevational view thereof, with the right side elevation being a mirror image thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a front elevational view thereof. 

The ornamental design for a recreational air mattress, as shown and described. 